TY  - RPRT
TI  - On the intensity of the magnetic superstorm of September 1909
AU  - Jeffrey J. Love
AU  - Hisashi Hayakawa
AU  - Edward W. Cliver
PY  - 2019
DO  - 10.1029/2018sw002079
UR  - https://pubs.usgs.gov/publication/70203248
ID  - 70203248
ER  -